Mor-Free L 75-164/C-411 September 2012 Page 1 of 5

MOR-FREETM L 75-164/Coreactant C-411

Fast Cure Solventless Laminating Adhesive 

Description

Mor-Free L 75-164/C-411 is a solvent-free, 100% solids, two component polyurethane adhesive system.

Mor-Free L 75-164/C-411 can be used for laminating all polyolefin films, including LDPE to LDPE, OPP to 

OPP, and OPP to LDPE, as well as nylon, aluminum, polyester, and other packaging substrates. The films 

may be unprinted or reverse printed with the appropriate laminating grade inks.

Mor-Free L 75-164/C-411 offers rapid bond development to permit further processing in as few as six hours, 

while offering good metal adhesion. Mor-Free L 75-164/C-411 can be used for a wide range of 

applications, including hot fill and boil-in bag.

Medical laminations made with Mor-Free L 75-164/C-411 were exposed to gamma radiation and Ethylene 

Oxide sterilization protocols. The laminations withstood the severe exposure with no degradation of 

lamination bond strength and performance.

Typical Properties*

(Isocyanate) (Polyol)

Mor-Free L 75-164 C-411

Solids 100% 100%

Viscosity 2500-3500 cps 1100 cps

Weight/Gallon 9.5 lb (1.14 g/cc) 9.2 lb (1.10 g/cc)

Appearance Clear, Yellow Clear

Mix Ratio 100 pbw 40 pbw

Shelf Life** 360 days 360 days

(unopened containers)

*These items are provided for general information only. They are approximate values and are not 

considered part of a product specification.

**Store in tightly closed containers in dry rooms at temperatures of 70F ± 20F (21 °C + 10 °C).

Mor-Free L 75-164/C-411 may react or interact with other components of laminations. Retained volatiles 

(solvents or water), slip additives, antiblock agents, and inks are some of the components that may cause 

property changes of the laminated structure. If Mor-Free L 75-164/C-411 is used on high slip films (COF < 

0.2) or with high slip LDPE/LDPE laminations, then the user must verify that potential film property changes 

due to the lamination process and materials are acceptable for the end use performance requirements.

Mor-Free L 75-164 is sensitive to moisture and should be stored under and transferred with dry nitrogen.

Recommended Coating Weight Range: 0.8 - 1.2 lb/ream (1.3 to 1.9 GSM).

MOR-FREE L 75-164/C-411 Adhesive must be used on machines which have been specially designed for 

solventless laminations. Such equipment allows the adhesive to be fed through a meter/mix/dispense 

device and provides web tension controls designed for adhesives with low initial tack.

Mor-Free L 75-164/C-411 September 2012 Page 1 of 5

PACKAGING AND

CONVERTING
Mor-Free L 75-164/C-411 September 2012 Page 2 of 5

Since the reactivity of MOR-FREE L 75-164/C-411 Adhesive is high, the laminates can generally be 

further processed in as few as 6 hours, depending on the laminate construction. The chemical curing is 

generally completed within 3 days at 75°F (24 °C), depending on the laminate construction. As always, 

converters should verify appropriate cure times for their individual application.

The two components of the adhesive are recommended to be used at room temperature of 70 °F (21 °C) 

or higher to ensure ease of pumping and homogeneous mixing. The use of heated hoses from the 

metering pumps to the application point should also be considered. If the adhesive and coreactant are 

stored at temperatures below 70 °F (21 °C), each component should be staged in a warmer area and 

given sufficient time to warm to room temperature. See recommended storage conditions below.

The original viscosity of the mixture can be reduced by preheating the application rollers to a typical 

temperature of 120° - 140F (50° - 60C). Higher temperatures may be required depending on the line 

speed, machine configuration, and choice of substrates.

A relatively slow initial increase in viscosity is due to the exothermic reaction of the adhesive immediately 

after the mixing process and the mechanical influences in the application system.

For short trial runs we recommend preparation of no more adhesive than can be used within 

5-10 minutes. A high speed stirrer suitable for a homogeneous mixing should be used. However, the use 

of a meter/mix/dispense device which continuously mixes the adhesive at the chosen ratio, controls the 

feeding of the application unit, and stops production automatically in case of machine failures, is 

indispensable for extended trials and normal production.

When processing Mor-Free L 75-164/C-411, the safety rules for working with isocyanates must be 

observed. The adhesive contains monomeric MDI. See Material Safety Data Sheet for specific details.

Cleaning

The application unit should be cleaned before the adhesive becomes insoluble due to progressive curing, 

if the machine stops take more than 30 minutes. If the applicable unit and mixing device are combustion 

proof, they may be cleaned with esters or ketones such as ethyl acetate and MEK. Slower evaporating 

ester and ketone solvents may also be used.

Several commercially available solvents are safe and effective for flushing and cleaning Mor-Free adhesive 

residues from solventless laminators and meter/mix/dispensing equipment that do not have combustion 

proof ratings. We recommend contacting either Dynaloy, Inc. (800-669-5709; www.dynaloy.com) or 

Danko Industries (630-882-6070) for cleaning solvent recommendations. Always consult the solvent 

supplier’s MSDS for safety information before use.

Safety, Handling and Storage

 Mor-Free L 75-164/C-411 can be stored for 360 days in airtight, closed, original containers in dry 

rooms at temperatures of 70 +/- 20F (21 +/- 10 °C ). Opened containers should be used as quickly 

as possible.

 Store in cool, dry, well ventilated area away from heat and ignition sources. Keep container tightly 

closed.

 Follow good manufacturing and handling practices.

 Wash thoroughly after handling. Wash contaminated goggles, face shield, and gloves. 

Professionally launder contaminated clothing before re-use.

 ATTENTION! Container can be hazardous when empty. Follow label warnings even after container 

is empty. Do not reuse empty container without professional cleaning.

 Refer to Material Safety Data Sheet for more information.
Mor-Free L 75-164/C-411 September 2012 Page 3 of 5

_______________________________________________________________________ 

Mor-Free is a registered trademark of Rohm and Haas Company.

These suggestions and data are based on information we believe to be reliable. They are offered in good faith, but without guarantee, as 

conditions and method of use of our products are beyond our control. We recommend that the prospective user determine the suitability of 

our materials and suggestions before adopting them on a commercial scale.

Suggestions for uses of our products or the inclusion of descriptive material from patents and the citation of specific patents in this 

publication should not be understood as recommending the use of our products in violation of any patent or as permission or license to use 

any patents of the Rohm and Haas Company.

Pot Life For 100:40 Mor-Free L 75-164/C-411 at 120°F

0.00

2000.00

4000.00

6000.00

8000.00

10000.00

12000.00

14000.00

16000.00

0:00 0:07 0:14 0:21 0:28 0:36 0:43 0:50 0:57 1:04

Time, Hours:minutes Viscosity, cp

49°C

Viscosity vs. Temperature of Mor-Free L 75-164/C-411

0.00

500.00

1000.00

1500.00

2000.00

2500.00

3000.00

3500.00

4000.00

70 80 90 100 110 120 130

Temperature of Mixture, (°F) Viscosity (cp)
Mor-Free L 75-164/C-411 September 2012 Page 4 of 5

The Dow Chemical Company Food and Drug Opinion

Name: MOR-FREE L75-164 

Regulation Complies Opinion 

Date Limitations

21CFR175.105 Y 08/15/2012

21CFR177.1395 A 08/15/2012 ▪ The combination of Mor-Free L75-164 and Coreactant C-411, when 

used in a ratio of 100:40, at 1.38 pounds per ream, and cured for 3 

days at room temperature, may be used as an adhesive layer in 

multilaminate food packaging materials with all food types provided 

that the adhesive layer is separated from food by a 1 mil linear low 

density polyethylene film (or equivalent or better barrier properties) in 

compliance with the Federal Food, Drug, and Cosmetic Act.

21CFR177.1395 A 08/15/2012 ▪ The combination of Mor-Free L75-164 and Mor-Free C-132-1, when 

used at a ratio of 100:63, at 1.21 pounds per ream, and cured for 5 

days at room temperature, may be used as an adhesive layer in 

multilaminate food packaging materials with all food types provided 

that the adhesive layer is separated from food by a 1 mil linear low 

density polyethylene film (or equivalent or better barrier properties) in 

compliance with the Federal Food, Drug, and Cosmetic Act.

21CFR177.1395 A 08/15/2012 ▪ The combination of Mor-Free L75-164 and Mor-Free C-132-2, when 

used at a ratio of 100:63, at 1.21 pounds per ream, and cured for 5 

days at room temperature, may be used as an adhesive layer in 

multilaminate food packaging materials with all food types provided 

that the adhesive layer is separated from food by a 1 mil linear low 

density polyethylene film (or equivalent or better barrier properties) in 

compliance with the Federal Food, Drug, and Cosmetic Act.

21CFR177.1395 A 08/15/2012 ▪ The combination of Mor-Free L75-164 and Coreactant C-411, when 

used in a ratio of 100:40, at 1.1 pounds per ream, and cured for five 

days at 120°F, may be used as an adhesive layer in multilaminate 

food packaging materials with aqueous foods provided that the 

adhesive layer is separated from food by a 0.8 mil polyethylene film 

(or equivalent or better barrier properties) in compliance with the 

Federal Food, Drug and Cosmetic Act.

FDA ALL/P A 08/15/2012 ▪ The combination of Mor-Free L75-164 and Coreactant C-411, when 

used at a ratio of 100:40, at a maximum 1.25 pounds/ream, and 

cured for seven days at room temperature, may be used as an 

adhesive layer under Conditions of Use J, Microwave Only, with all 

food types provided that the adhesive layer is separated from food by 

a 48 ga PET film in compliance with the United States Federal Food, 

Drug, and Cosmetic Act.

▪ The combination of Mor-Free L75-164 and Coreactant C-411, when 

used at a ratio of 100:40, at a maximum 1.25 pounds/ream, and 

cured for seven days at 45C, may be used as an adhesive layer 

under Conditions of Use J, Dual-Ovenable Only, with all food types 

provided that the adhesive layer is separated from food by a 48 ga 

PET film in compliance with the United States Federal Food, Drug, 

and Cosmetic Act.

Legend:

L Yes, this product is cleared with limitations noted

N No, this product is not cleared

Y Yes, this product is cleared.

A Affirmed as compliant based on migration studies.

C Calculation

Regulations:

21CFR175.105 Adhesives

21CFR177.1395 Laminate structures for use at temperatures between 120F and 250F

21CFR177.1395 Laminate structures for use at temperatures between 120F and 250F

21CFR177.1395 Laminate structures for use at temperatures between 120F and 250F

21CFR177.1395 Laminate structures for use at temperatures between 120F and 250F

FDA ALL/P ALL FDA FOOD CONTACT REGULATIONS
Mor-Free L 75-164/C-411 September 2012 Page 5 of 5

Name: Mor-Free Coreactant C-411 Adhesive 

Regulation Complies Opinion 

Date Limitations

21CFR175.105 Y 05/12/2000

21CFR175.300 N 11/01/2001

21CFR177.1390 A 08/23/2000 ▪ A = AFFIRMED AS COMPLIANT BASED UPON MIGRATION 

STUDIES. THE COMBINATION OF MOR-FREE 413A/MOR-FREE 

COREACTANT C-411 MAY BE USED AS AN ADHESIVE LAYER IN 

MULTILAMINATE FOOD PACKAGING MATERIALS WITH ALL 

FOOD TYPES AND WITH NO LIMITATIONS AS TO THE TYPE OF 

FOOD-CONTACT LAYER USED IN COMPLIANCE WITH THE 

FEDERAL FOOD, DRUG, AND COSMETIC ACT.

Paragraph ©(2)(ii)

21CFR177.1395 A 11/12/2008 ▪ In accordance with the limitations as described under 

21CFR177.1390 above.

▪ The combination of Mor-Free L75-164 and Coreactant C-411, when 

used in a ratio of 100:40, at 1.38 pounds per ream, and cured for 3 

days at room temperature, may be used as an adhesive layer in 

multilaminate food packaging materials with all food types provided 

that the adhesive layer is separated from food by a 1 mil linear low 

density polyethylene film (or equivalent or better barrier properties) in 

compliance with the Federal Food, Drug, and Cosmetic Act.

FDA ALL/P A 02/02/2012 ▪ The combination of Mor-Free L75-164 and Coreactant C-411, when 

used at a ratio of 100:40, at a maximum 1.25 pounds/ream, and 

cured for seven days at room temperature, may be used as an 

adhesive layer under Conditions of Use J, Microwave Only, with all 

food types provided that the adhesive layer is separated from food by 

a 48 ga PET film in compliance with the United States Federal Food, 

Drug, and Cosmetic Act.

Legend:

L Yes, this product is cleared with limitations noted

N No, this product is not cleared

Y Yes, this product is cleared.

A Affirmed as compliant based on migration studies.

Regulations:

21CFR175.105 Adhesives

21CFR175.300 Resinous and polymeric coatings

21CFR177.1390 Laminate structures for use at temperatures of 250F and above

21CFR177.1395 Laminate structures for use at temperatures between 120F and 250F

FDA ALL/P ALL FDA FOOD CONTACT REGULATIONS

Disclaimer:

 This information relates specifically to this product. We believe this information to be accurate and 

reliable as of this date.

 We recommend that our customers make their own determination on the suitability of this product for 

their particular application.

 We cannot guarantee that the indirect food additives/food-contact status of this product will remain 

unchanged indefinitely; therefore we recommend that you periodically verify its status.